Severe · Flood WatchActive alert

Flood Watch issued September 13 at 12:50PM PDT until September 13 at

Affecting Moses Lake Area; Upper Columbia Basin; Northeast Mountains; Waterville Plateau

In effect until: Sep 14, 2026, 3:00 AM

Moses Lake Area; Upper Columbia Basin; Northeast Mountains; Waterville Plateau

Possible impact zone; conditions develop through 3:00 AM.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

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Read the original bulletin (official text)

* WHAT...Debris and ash flows, rock slides, especially near burn
scars. Minor flooding caused by excessive rainfall is possible.

* WHERE...Portions of Central, East Central, and Northeast
Washington, including the following areas and counties, in Central
Washington, Waterville Plateau. In East Central Washington, Moses
Lake Area and Upper Columbia Basin. In Northeast Washington,
Northeast Mountains.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Excessive runoff may result in debris and ash flows over
burn scars in steep terrain.  Rock slides will be possible.  Minor
flooding in urban areas where there is poor drainage. Storm drains
and ditches may become clogged with debris.

* ADDITIONAL DETAILS...
- Moderate to heavy rain has fallen.  Observed rainfall amounts
range from 0.30-0.80 inches.   Additional rainfall amounts up to
0.25 inches are expected.
- This includes but is not limited to the following burn scars:
Modrite, Hudspeth, Mitre Rock, and in Grant County, Garred Road
and Railroad.
- http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 13 at 12:50PM PDT until September 13 at

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